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fuel sending unit
I moved my gas tank to under the bed and with the aftermarket sending unit the stock gas gauge when empty still shows a 1/4 tank. Anyone have any info:
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Re: fuel sending unit
Does your float move in the full range of the tank?
Are they compatible with each other? (tank/sending unit) |
Re: fuel sending unit
I don't know if they are compatible or not I bought the truck as a basket case and the tank was with it.
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Re: fuel sending unit
I had the same problem with a "Harwood" fuel cell. I bent the float rod on the sendind unit to get it where I wanted it
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Re: fuel sending unit
Are you using your original gauges in the cab?
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Re: fuel sending unit
More than likely, the fuel level sending unit in your new tank has a 0-90 ohm operation (late model GM). Unfortunately, your stock fuel level gauge requires a 0-30 ohm signal to function properly. You'll either need to switch to an aftermarket fuel level gauge with a 0-90 ohm operation, or try and find a 0-30 ohm resistor to replace the 0-90 ohm resistor on the sending unit...the former being much easier.
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Re: fuel sending unit
:agree:
Thats what I was thinkin. |
Re: fuel sending unit
Mine were compatible, just not properly "adjusted". I do have the factory fuel gauge. I also remember tweaking the gauge needle a little also. It's a little fuzzy, since I did it about 15 years ago. I put it exactly on the empty line at the floats lowest point. That way I knew when it hit empty I was done for.
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Re: fuel sending unit
I am using the stock gauge so maybe they are not compatible thanks for the imput. If any one knows where I can get different parts for the sending unit I would appreciate the info.
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Re: fuel sending unit
Quote:
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Re: fuel sending unit
When you fill up the tank, does the gauge read full, or does it move at all?
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Re: fuel sending unit
Quote:
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Re: fuel sending unit
thanks for all the feed back the float system I have, is a float that slides up a tube not one that pivots like the original. Yes it does move to full when I fill it up but it stops at a 1/4 tank when it is empty. It seems as though it sit at 1/4 full a while before it is empty
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Re: fuel sending unit
Quote:
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Re: fuel sending unit
Generally, it's not difficult to change. The difficult aspect is finding a 0-30 ohm resister that is the same shape and dimension. In my experience, often the type of resistor that is used for some of the fuel cell, or custom tank applications only is available in the 0-90 ohm range. There are components that you can splice into the wire harness, but I've never been able to get those to work very well.
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Re: fuel sending unit
Can anyone post up what the ohm ranges are from the factory between the different year models?
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